--- /dev/null
+/* GStreamer dynamic effect change test app
+ * Copyright (C) 2012 Tim-Philipp Müller <tim centricular net>
+
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ * Based on python script by Thiago Sousa Santos
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gst/gst.h>
+
+static gchar *opt_effects = NULL;
+
+#define DEFAULT_EFFECTS "identity,exclusion,navigationtest," \
+ "agingtv,videoflip,vertigotv,gaussianblur,identity"
+
+static GstElement *conv_before;
+static GstElement *conv_after;
+static GstElement *cur_effect;
+static GstElement *pipeline;
+
+static GQueue effects = G_QUEUE_INIT;
+
+
+#if 0
+static GstPadProbeReturn
+pad_probe_cb (GstPad * pad, GstPadProbeInfo * info, gpointer user_data)
+{
+ GstElement *next = user_data;
+
+ GST_ERROR_OBJECT (pad, "pad is idle now");
+
+ gst_element_set_state (cur_effect, GST_STATE_NULL);
+
+ /* remove unlinks automatically */
+ GST_ERROR_OBJECT (pipeline, "removing %" GST_PTR_FORMAT, cur_effect);
+ gst_bin_remove (GST_BIN (pipeline), cur_effect);
+ GST_ERROR_OBJECT (pipeline, "adding %" GST_PTR_FORMAT, next);
+ gst_bin_add (GST_BIN (pipeline), next);
+ GST_ERROR_OBJECT (pipeline, "linking..");
+ gst_element_link_many (conv_before, next, conv_after, NULL);
+ gst_element_set_state (next, GST_STATE_PLAYING);
+ cur_effect = next;
+ /* FIXME: this seems to not work */
+ gst_pad_remove_probe (pad, info->id);
+ g_print ("Done\n");
+ /* FIXME: returning PROBE_REMOVE from an idle probe seems to do nothing */
+ return GST_PAD_PROBE_REMOVE;
+}
+#endif
+
+static gboolean
+timeout_cb (gpointer user_data)
+{
+ GMainLoop *loop = user_data;
+ GstElement *next;
+ gulong block_id;
+ GstPad *pad;
+
+ g_queue_push_tail (&effects, gst_object_ref (cur_effect));
+
+ next = g_queue_pop_head (&effects);
+
+ if (next == NULL) {
+ g_main_loop_quit (loop);
+ return FALSE;
+ }
+
+ g_print ("Switching from '%s' to '%s'..\n", GST_OBJECT_NAME (cur_effect),
+ GST_OBJECT_NAME (next));
+
+ pad = gst_element_get_static_pad (conv_before, "src");
+
+ block_id =
+ gst_pad_add_probe (pad, GST_PAD_PROBE_TYPE_BLOCK, NULL, NULL, NULL);
+ g_print ("Blocked\n");
+ gst_pad_remove_probe (pad, block_id);
+ gst_element_set_state (cur_effect, GST_STATE_NULL);
+
+ /* remove unlinks automatically */
+ gst_bin_remove (GST_BIN (pipeline), cur_effect);
+ g_print ("Removed\n");
+ gst_bin_add (GST_BIN (pipeline), next);
+ g_print ("Added\n");
+ gst_element_link_many (conv_before, next, conv_after, NULL);
+ g_print ("Re-linked\n");
+ gst_element_set_state (next, GST_STATE_PLAYING);
+ cur_effect = next;
+ gst_element_set_state (pipeline, GST_STATE_PLAYING);
+ /* FIXME: we have to remove the block before we link, otherwise the
+ * caps queries on linking will deadlock us - check if that's intentional */
+#if 0
+ gst_pad_remove_probe (pad, block_id);
+#endif
+ g_print ("Done\n\n\n");
+
+ /* FIXME: waiting for the pad to be idle, and then relinking from there
+ * doesn't seem to work very well either for some reason, and returning
+ * GST_PAD_PROBE_REMOVE does not seem to work. Doing the same from a
+ * BLOCKING callback has the same problem as above */
+#if 0
+ gst_pad_add_probe (pad, GST_PAD_PROBE_TYPE_IDLE, pad_probe_cb, next, NULL);
+#endif
+
+ return TRUE;
+}
+
+static gboolean
+bus_cb (GstBus * bus, GstMessage * msg, gpointer user_data)
+{
+ GMainLoop *loop = user_data;
+
+ switch (GST_MESSAGE_TYPE (msg)) {
+ case GST_MESSAGE_ERROR:{
+ GError *err = NULL;
+ gchar *dbg;
+
+ gst_message_parse_error (msg, &err, &dbg);
+ gst_object_default_error (msg->src, err, dbg);
+ g_error_free (err);
+ g_free (dbg);
+ g_main_loop_quit (loop);
+ break;
+ }
+ default:
+ break;
+ }
+ return TRUE;
+}
+
+int
+main (int argc, char **argv)
+{
+ GOptionEntry options[] = {
+ {"effects", 'e', 0, G_OPTION_ARG_STRING, &opt_effects,
+ "Effects to use (comma-separated list of element names)", NULL},
+ {NULL}
+ };
+ GOptionContext *ctx;
+ GError *err = NULL;
+ GMainLoop *loop;
+ GstElement *src, *q1, *q2, *effect, *filter1, *filter2, *sink;
+ gchar **effect_names, **e;
+
+ ctx = g_option_context_new ("");
+ g_option_context_add_main_entries (ctx, options, GETTEXT_PACKAGE);
+ g_option_context_add_group (ctx, gst_init_get_option_group ());
+ if (!g_option_context_parse (ctx, &argc, &argv, &err)) {
+ g_print ("Error initializing: %s\n", err->message);
+ return 1;
+ }
+ g_option_context_free (ctx);
+
+ GST_FIXME ("Multiple things to check/fix, see source code");
+
+ if (opt_effects != NULL)
+ effect_names = g_strsplit (opt_effects, ",", -1);
+ else
+ effect_names = g_strsplit (DEFAULT_EFFECTS, ",", -1);
+
+ for (e = effect_names; e != NULL && *e != NULL; ++e) {
+ g_print ("Adding effect '%s'\n", *e);
+ g_queue_push_tail (&effects, gst_element_factory_make (*e, NULL));
+ }
+
+ pipeline = gst_pipeline_new ("pipeline");
+
+ src = gst_element_factory_make ("videotestsrc", NULL);
+ g_object_set (src, "is-live", TRUE, NULL);
+
+ filter1 = gst_element_factory_make ("capsfilter", NULL);
+ gst_util_set_object_arg (G_OBJECT (filter1), "caps",
+ "video/x-raw, format=I420, width=320, height=240, "
+ "format={ I420, YV12, YUY2, UYVY, AYUV, Y41B, Y42B, "
+ "YVYU, Y444, v210, v216, NV12, NV21, UYVP, A420, YUV9, YVU9, IYU1 }");
+
+ q1 = gst_element_factory_make ("queue", NULL);
+
+ conv_before = gst_element_factory_make ("videoconvert", NULL);
+
+ effect = g_queue_pop_head (&effects);
+ cur_effect = effect;
+
+ conv_after = gst_element_factory_make ("videoconvert", NULL);
+
+ q2 = gst_element_factory_make ("queue", NULL);
+
+ filter2 = gst_element_factory_make ("capsfilter", NULL);
+ gst_util_set_object_arg (G_OBJECT (filter2), "caps",
+ "video/x-raw, width=320, height=240, "
+ "format={ RGBx, BGRx, xRGB, xBGR, RGBA, BGRA, ARGB, ABGR, RGB, BGR }");
+
+ sink = gst_element_factory_make ("ximagesink", NULL);
+
+ gst_bin_add_many (GST_BIN (pipeline), src, filter1, q1, conv_before, effect,
+ conv_after, q2, sink, NULL);
+
+ gst_element_link_many (src, filter1, q1, conv_before, effect, conv_after,
+ q2, sink, NULL);
+
+ gst_element_set_state (pipeline, GST_STATE_PLAYING);
+
+ loop = g_main_loop_new (NULL, FALSE);
+
+ gst_bus_add_watch (GST_ELEMENT_BUS (pipeline), bus_cb, loop);
+
+ g_timeout_add_seconds (1, timeout_cb, loop);
+
+ g_main_loop_run (loop);
+
+ gst_element_set_state (pipeline, GST_STATE_NULL);
+ gst_object_unref (pipeline);
+
+ return 0;
+}
projects / platform / upstream / gstreamer.git / commitdiff